Yarn-nipper.



PATENTED Nov. 13, 1906.

C. H. L. KAHLER.

YARN NIPPER.

APPLICATION FILED SBPT.15,1905.

lullen/for UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Nov. 13, 1906.

Application filed September 15,1905. Serial No. 278.613.

To all whom it may concern:

Be it known that I, CHARLES H. L. KAH- LER, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Yarn- Nippers, of which the following is a specification.

This invention relates to devices commonly called nippers for holding the yarn on its way from the hackle to the jenny or spinning frame, such nippers being relied upon to hold the yarn yieldingly against tension produced by the spinning or twisting devices to enable the yarn to be properly twisted..

l/Vhile my invention is intended chiefly for the holding of hemp fibers used in the manufacture of rope, it is not limited to such use.

One of the objects of my invention is to provide a nipper which can be readily repaired without removing the same from the frame.

Another object is to provide a nipper which may be employed either for iine or coarse yarn by changing the holders of the upper and lower jaws.

Another object is to provide a nipper which is so constructed that no dirt can accumulate in the lower part thereof.

Another object is to provide a nipper the lower holder of which is supported so that it may be easily adjusted or removed.

Another object is to provide nipper in which the same means employed for clamping the upper-jaw holder in place will support the tension-spring mechanism.

To these ends the invention consists in the construction and combination of parts substantially as hereinafter described and claimed.

Of the accompanying drawings, Figure l is a side elevation of a nipper embodying my invention, a portion of the tension mechanism being broken away. Fig. 2 is a rear elevation thereof or from the right of Fig. l. Fig. 3 represents a vertical section through the longitudinal center of the device. Fig. 4 represents a section on line 4 4 of Fig. 1. Fig. 5 is a view similar to a part of Fig. 3, some of the parts being shown in a diliferent position. Fig. 6 is a perspective view of the uppernipper holder.

Similar reference characters indicate the same or similar parts in all the views.

The body of the device comprises a base 10, adapted to be attached to the arm of the jenny-frame, as usual, an upright 11 having a recess or mouth 12 formed with a central passage 13 for the loose fibers passing from the hackle to the nipper-jaws, and a top portion 14. A removable piece or j ani-plate 15 is secured to the rear edge of the top 14 by screws 17 and is formed with an exit-opening `or guide-hole 16 for the yarn7 which is twisted by the combined action of the usual twisting mechanism and the nipper-jaws. Said plate 15 is formed with a horizontal extension, on which is secured the casing 18 of the tensionspring 19, said tension-spring being connected by a link 20 with the levers of the oscillating holder, said construction being one that is well known, excepting for the specific means of connecting the lower ends of said link with the levers, as hereinafter described.

Fitting a suitable recess in the top 14 and held or jammed therein by the removable jam-plate 15 is the upper stationary but re movable holder 21, (see Fig. 6,) having a hole 22 extending transversely through it, said hole being connected with a recess 24 in the lower curved face of the block or holder 2l by a passage or split 23, this construction being to enable the holder to be sufliciently elastic, so that the sides of the recess 24 can be clamped upon the jaw or wear-plate25 by means of a suitable clamping-screw 26. See Fig. 3.) The jaw 25 is usually made of hardened steel, While the block or holder 21 is usually formed of cast-iron. By the construction described a new jaw or wear-plate may be readily substituted in the holder for a worn one. The upper-jawholder 21 is held rmly in the vertical position in which it has been set for use by the pressure of the jamplate l5 against the end of said holder, which may project slightly from the end of the recess in the top 14. To accurately adjust the proper height for the upper jaw, I eniploy a height adjusting screw 27, fitted to a suitable hole in the top of the holder 21, near one end thereof, the head of said screw slightly overlapping, so as to rest upon the top of the plate 15. This screw 27 is to be adjusted before the plate 15 has been firmly set up against the holder 21 by means of the screws 17. A suitable knob or handle 2S is secured to the top of the holder 21 by a screw 29,'so as to enable the said holder 21 to be lifted or taken out of position.

IOO

A yoke or frame 30 is supported upon the upper surface of the base 10 and is secured thereto by suitable means, such as screws 31. If desired, the height of this yoke or frame may be varied by interposing a sheet of suit- IIO able material between it and the base 1 0. Fitting a screw-threaded transverse opening in the upper end of each arm of the yoke 30 is a screw 32, having a cone-shaped inner end, jam-nuts 33 being shown for the purpose of holding the screws in their proper positions to support the lower holder 34, the latter being formed with. cone-shaped recesses to receive the cone-bearings formed by theinner ends of the screws carried by `the yoke, whereby the'holder is pivotally supported, so as to be free to oscillate in the manner usual in this type of nipper device.

The holder 34 is formed to clamp a removable jaw in substantially the same manner as the upper holder 21. For this purpose the said holder 34 is formed with a holder 35, which connects by a split or cut-away portion 36 with the recess 37, the sides of which form jaws to clamp the edges of the jaw or Wear-plate 38, which also is usually formed of hardened steel. The sides of the pivoted or oscillating holder are compressed so as to clamp the jaw 38 by means of a screw 39. (See Fig. 3.) As is usual in this class of devices, the oscillating holder is formed with a releasing-groove 40 in its periphery, said Vgroove being in line with the entrance groove or channel 41, formed in the block or holder 21, and the exit groovc or channel 42, formed in said holder 21, these being in turn in line with the yarn-entrance passage 13 and the eXitopening 16, formed in the jam- .plate 15.

The levers 43 are connected to the vhub of the holder 34 in a usual manner, said hub being formed with circular portions on which the ringshaped ends of levers 43 are mounted, screws 44 passing through the levers into the holder, One of the levers 43 is formed with an arm 45, by means of which the oscillating holder can be rocked against the tension of the spring 19. As shown in Fig. 2, the lower ends of the link 2O extend inward or toward each other through. suitable openings in the levers 43, and therefore they may be readily sprung outward or apart, so as to disconnect the link 20 entirely from the oscillating holder. rl`his is accomplished quickly and easily and either enables the oscillating holder to be left in the position shown in Fig. 5 or will enable the parts to be more readily separated for inspection or repair.

VVhen the parts are held in the position shown in Fig. 5, by means of the arm 45 the yarn in loose condition may be introduced in the usual manner between the two holders. Upon releasin the arm 45 the spring 19 shifts the oscil ating holder toward the position shown in Fig. 3 as far as the mass of fiber between the jaws will permit. When the device is new or the wear-plates new, the bite of the lower jaw 38 is usually near the front edge thereof, and I usually form a slight depression in the edge of the jaw 38 in alinement with the groove 40 of the holder, as shown in Fig. 5. the first clamping action on the yarn takes place. As the jaw 38 wears away in use, a groove is usually worn across it. When said jaw is worn, so as to be of no further service, the holder 34 is easily removed by releasing the ends of the link 20 from the levers 42 and unscrewing one, or both, of the cone-bearings 32, or, if desired, the entire yoke 30 and the holder carried thereby' may be removed by disconnecting the screws 31. W hen the holder is out of position, another one of a dif ferent size may be substituted therefor, and of course the jaw 3S can be readily taken out and replaced. lt is not necessary, however, to remove the holder 34 in order to renew the jaw, since this can be done while the parts are in the positions shown in Fig. 3 or 5 by simply removing the clam ing-screw 39, so as to release the jaw 38 suV ciently to enable it to be slid out from one side of the holder.

l/Vhen it is desired to renew the upper jaw 25, the screws 17 are first loosened enough to remove the pressure of the jam-plate 15. Then the block or holder 21 is lifted by means of its handle and the clamping-screw 26 partially removed, so as to relieve pressure of the sides of recess 24 upon the jaw 25. By varying the height of the screw 27 in the block 21 the exact proper distance between the two jaws may be determined.

While the cone screws or bearings 32 enable a quick change of the lower holder to be made, the screw 39 enables a quick change of the jaw of said holder to be made without removing the holder itself.

A particular advantage resulting from the construction and support of the lower-jaw holder is that there is ample space below it for the escape of any dirt or lint. In a form of nipper heretofore made the oscillating holder is mounted in a hole in the base or frame which closely receives the holder and it has been arranged to permit of the discharge of some dirt by formin the holder in other than a round shape. till there will be some clogging. According to my invention I am enabled to make the oscillating holder perfectly round, and therefore easy to machine out and still have no place for the accumulation or clogging of dirt.

Having now described my invention, I claim 1. A yarn-nipper comprising in its con struction a body having stationaryr and pivoted removable holders for the nipperiaws, and jaws removably mounted in said holders.

2. A yarn-nipper comprising in its construction a stationary jaw holder, and a pivoted jaw-holder below the stationary holder, the pivoted holder being mounted in open bearings to permit of the escape of dirt.

It is at this point'thatA IOO IIS

3. A yarn-nipper comprising in its construction upper and lower jaw holders, each having aref-ess, jaws iitted to said recesses, and means for adjusting the Width of said recesses to clamp or release said jaws.

4. A yarn-nip er comprising in its construction a braclet havingI bearings, a jawholder pivotally mounted on said bearings, and means whereby said bracket may be removed with its jaw-holder from the frame of the nipper When the said frame-is secured in position for use.

5. A yarn-nipper comprising,l a stationary jaw-holder, a pivoted jaw-holder, and a removable bracket havlng cone-bearings for said pivoted holder.

6. A yarn-nipper comprising in its construction a bodyr having a base portion, a yoke removably supported thereon and having cone-bearings, and a pivoted jaw-holder and jaw mounted on said cone-bearings.

7. A yarn-nipper comprising` in its kconstruction a body having its upper portion formed Wit-h a recess, a jaw-holder and jaw fitted to said recess, and a jam-plate for clamping said holder in the recess.

yarn-nipper comprising in. its construction a body having its upper portion formed with a recess, a jaw-holder, and jaw itted to said recess, a jam-plate for clamping said holder in the recess, and a tensionspring having its casing supported by said jam-plate.

9. A yarn-nipper having a substantially circular pivoted jaw-holder, and bearings therefor, and a jaw carried by the upper portion of said holderl an open space being ormed below the holder for the escape oi irt.

In testimony whereof I have affixed my signature in presence of two Witnesses.

. CHARLES H. L. KAHLER.

Titnesses z A. W. HARRIsoN, M. B. MAY. 

